M50FLW080A Datasheet, PDF (1/64 Pages) STMicroelectronics – 8 Mbit (13 x 64KByte Blocks + 3 x 16 x 4KByte Sectors), 3V Supply Firmware Hub / Low Pin Count Flash Memory

M50FLW080A
M50FLW080B
8-Mbit (13 x 64-Kbyte Blocks + 3 × 16 × 4 Kbyte Sectors)
3-V supply, Firmware Hub / low-pin-count Flash memory
Feature summary
■ Flash memory
– Compatible with either the LPC interface or
the FWH interface (Intel Spec rev1.1) used
in PC BIOS applications
– 5-signal communication interface
supporting Read and Write operations
– 5 additional general-purpose inputs for
platform design flexibility
– Synchronized with 33 MHz PCI clock
■ 16 blocks of 64 Kbytes
– 13 blocks of 64 Kbytes each
– 3 blocks, subdivided into 16 uniform
sectors of 4 Kbytes each
Two blocks at the top and one at the bottom
(M50FLW080A)
One block at the top and two at the bottom
(M50FLW080B)
■ Enhanced security
– Hardware Write Protect pins for block
protection
– Register-based Read and Write Protection
– Individual Lock Register for each 4 KByte
sector
■ Supply voltage
– V_CC = 3.0 to 3.6 V for Program, Erase and
Read operations
– V_PP = 12 V for Fast Program and Erase
■ Two interfaces
– Auto Detection of Firmware Hub (FWH) or
Low Pin Count (LPC) memory cycles for
embedded operation with PC chipsets
– Address/Address Multiplexed (A/A Mux)
interface for programming equipment
compatibility.
■ Programming time: 10 µs typical
PLCC32 (K)
TSOP32 (NB)
8 × 14 mm
TSOP40 (N)
10 × 20 mm
■ Program/Erase Controller
– Embedded Program and Erase algorithms
– Status Register bits
■ Program/Erase Suspend
– Read other Blocks/Sectors during Program
Suspend
– Program other Blocks/Sectors during Erase
Suspend
■ ELectronic signature
– Manufacturer Code: 20h
– Device Code (M50FLW080A): 80h
– Device Code (M50FLW080B): 81h
■ Packages
– ECOPACK® (RoHS compliant)
October 2006
Rev 4
1/64
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